/*
 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */
import java.io.File;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;

public class CustomLoaderApp {
    private static String className = "LambHello";
    // Prevent the class from being GC'ed too soon.
    private static Class keptC = null;

    public static void main(String args[]) throws Exception {
        String path = args[0];
        URL url = new File(path).toURI().toURL();
        URL[] urls = new URL[] {url};
        System.out.println(path);
        System.out.println(url);

        boolean init = false;
        if (args.length >= 2 && args[1].equals("init")) {
            init = true;
        }

        // The dynamicArchive/LambdaCustomLoader.java test passes the keep-alive
        // argument for preventing the class from being GC'ed prior to dumping of
        // the dynamic CDS archive.
        boolean keepAlive = false;
        if (args[args.length - 1].equals("keep-alive")) {
            keepAlive = true;
        }

        URLClassLoader urlClassLoader =
            new URLClassLoader("HelloClassLoader", urls, null);
        Class c = Class.forName(className, init, urlClassLoader);
        if (keepAlive) {
            keptC = c;
        }

        System.out.println(c);
        System.out.println(c.getClassLoader());
        if (c.getClassLoader() != urlClassLoader) {
            throw new RuntimeException("c.getClassLoader() == " + c.getClassLoader() +
                                       ", expected == " + urlClassLoader);
        }

        if (init) {
            Object o = c.newInstance();
            Method method = c.getMethod("main", String[].class);
            String[] params = null;
            method.invoke(null, (Object)params);
        }
    }
}
